[ 2.482784] ------------[ cut here ]------------ [ 2.482871] refcount_t: underflow; use-after-free. [ 2.482951] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.483051] Modules linked in: [ 2.483094] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.483195] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.483264] Workqueue: netns cleanup_net [ 2.483311] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.483364] Code: 85 e8 e8 54 ba ff 90 0f 0b 90 90 c3 80 3d 00 e6 2b 01 00 75 89 c6 05 f7 e5 2b 01 01 90 48 c7 c7 f8 48 75 85 e8 c5 54 ba ff 90 <0f> 0b 90 90 c3 80 3d db e5 2b 01 00 0f 85 62 ff ff ff c6 05 ce e5 [ 2.483558] RSP: 0018:ffffb13380067d50 EFLAGS: 00010286 [ 2.483609] RAX: 0000000000000000 RBX: ffffb13380067d60 RCX: 00000000ffffdfff [ 2.483699] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.483789] RBP: ffffb13380067858 R08: ffffffff85f5ba28 R09: 00000000ffffdfff [ 2.483872] R10: ffffffff85e7ba40 R11: ffffffff85f2ba40 R12: dead000000000122 [ 2.483950] R13: 00000000fffb7551 R14: 0000000000000001 R15: ffff9bbfc5235000 [ 2.484043] FS: 0000000000000000(0000) GS:ffff9bc078591000(0000) knlGS:0000000000000000 [ 2.484129] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.484200] CR2: 000055c43c70efa8 CR3: 00000000032c8004 CR4: 0000000000772ef0 [ 2.484281] PKRU: 55555554 [ 2.484307] Call Trace: [ 2.484336] [ 2.484363] netdev_run_todo+0x21a/0x550 [ 2.484414] ops_undo_list+0x1e3/0x1f0 [ 2.484461] cleanup_net+0x1b7/0x300 [ 2.484516] process_one_work+0x162/0x380 [ 2.484591] worker_thread+0x299/0x3c0 [ 2.484632] ? rescuer_thread+0x4c0/0x4c0 [ 2.484673] kthread+0x101/0x1f0 [ 2.484718] ? kthreads_online_cpu+0x110/0x110 [ 2.484784] ? kthreads_online_cpu+0x110/0x110 [ 2.484849] ret_from_fork+0x11c/0x140 [ 2.484893] ? kthreads_online_cpu+0x110/0x110 [ 2.484951] ret_from_fork_asm+0x11/0x20 [ 2.485003] [ 2.485031] ---[ end trace 0000000000000000 ]---